Netto 1.2 Att per recruit (R). + the discard function.
Comparison
Heavy cavalry
0.9 Att per R, conditionally 1.6 (Avg 1.25 (wait, thats not fair, you're likely to hit it, if you use it)). +Soldier keyword -Charge (easier to discard)
Sea monster
1 Att per R, conditionally 3 (!!). +Banish (which is just a minor plus)
Treant
0.6 Att per R, conditionally 1.2, like Giant. +Nature
Warlord
1.05 Att per R Conditionally 1,95. +Barbarian
Stats for the win!
My conclusion would be that Treant needs it harder.
Or maybe all other cards need to be nerfed XD.